Mathcad plot

Hi

I'm trying to make the blue curve start at red and stop at black and do a circle pattern/array on it but consistant with the blue's formula so that would mean the pattern shape is not identical.

I need assistance.

Please do not circle back  https://community.ptc.com/t5/PTC-Mathcad/Piecewise-Function/m-p/623744/highlight/true#M186926 as the code is specific to a circle and I need a code that is more generic  and not specific to a certain shape. i.e. i just need to change the shape of the original function and the code should still be applicable.

Please assist.